Study on chemical regeneration method of saturated zeolite adsorbed ammonia nitrogen

doi:10.11894/iwt.2018-0815

Industrial Water Treatment ›› 2019, Vol. 39 ›› Issue (8): 73-76. doi: 10.11894/iwt.2018-0815

• Research and Experiment • Previous Articles Next Articles

Study on chemical regeneration method of saturated zeolite adsorbed ammonia nitrogen

Shuai Zhang¹(),Fangfang Ye¹,Changgang Li¹,Tong Zhan¹,Shaohong Peng¹,Wenyu Xie^1,*(),Xiaoli He²

1. Faculty of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
2. SINOPEC Zhanjiang Dongxing Petrochemical Co., Ltd., Zhanjiang 524012, China

Received:2019-06-26 Online:2019-08-20 Published:2019-08-21
Contact: Wenyu Xie E-mail:zhangsh33@163.com;gdmmxwy@163.com
Supported by:
广东石油化工学院2018年科研基金青年创新人才培育项目(2018qn19);广东省普通高校特色创新类项目(2017KTSCX129);茂名市科技计划项目(180321101704727)

饱和吸附氨氮沸石的化学再生方法研究

张帅¹(),叶芳芳¹,李长刚¹,詹彤¹,彭绍洪¹,谢文玉^1,*(),何晓礼²

1. 广东石油化工学院环境科学与工程学院, 广东茂名 525000
2. 中国石化湛江东兴石油化工有限公司, 广东湛江 524012

通讯作者: 谢文玉 E-mail:zhangsh33@163.com;gdmmxwy@163.com
作者简介:张帅(1990-),硕士,助教。电话:17876961959, E-mail:zhangsh33@163.com
基金资助:
广东石油化工学院2018年科研基金青年创新人才培育项目(2018qn19);广东省普通高校特色创新类项目(2017KTSCX129);茂名市科技计划项目(180321101704727)

Abstract

Abstract:

The regeneration mechanism and optimal chemical regeneration conditions of natural zeolite adsorption to ammonia nitrogen are discussed. The results show that there are two ways to regenerate the zeolite, the desorption of NH₄⁺ by alkaline solution and the change of surface morphology of the zeolite by alkaline solution. The optimal regeneration conditions for adsorption saturated zeolite are:NaOH mass fraction of 4%, regeneration time of 4 h and regeneration temperature of 60℃. After 25 regenerations, the adsorption capacity of zeolite maintained at 85.2%, with an average loss of 0.6% per regeneration. It is feasible for industrial application.

Key words: zeolite, adsorption, ammonia, chemical regeneration

摘要：

探讨了饱和吸附氨氮天然沸石的再生机理和最佳化学再生条件。结果表明，沸石的再生存在2个途径：碱性溶液对NH₄⁺的解吸，以及碱性溶液对沸石表面形态的改变。饱和吸附沸石的最佳再生条件：NaOH质量分数为4%，再生时间4 h，再生温度60 ℃。沸石经过25次再生后，吸附能力保持在85.2%，每次再生平均丢失0.6%，具有工业应用的可行性。

关键词: 沸石, 吸附, 氨氮, 化学再生

CLC Number:

TQ424
X703

Shuai Zhang,Fangfang Ye,Changgang Li,Tong Zhan,Shaohong Peng,Wenyu Xie,Xiaoli He. Study on chemical regeneration method of saturated zeolite adsorbed ammonia nitrogen[J]. Industrial Water Treatment, 2019, 39(8): 73-76.

张帅,叶芳芳,李长刚,詹彤,彭绍洪,谢文玉,何晓礼. 饱和吸附氨氮沸石的化学再生方法研究[J]. 工业水处理, 2019, 39(8): 73-76.

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URL: https://gyscl.magtechjournal.com/EN/10.11894/iwt.2018-0815

https://gyscl.magtechjournal.com/EN/Y2019/V39/I8/73

Figures/Tables 8

References 9

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元素	C	O	Na	Mg	Al
质量分数/%	5.17	42.22	1.31	0.64	6.74
元素	Si	K	Ca	Fe
质量分数/%	29.17	0.88	5.53	0.93

元素	C	O	Na	Mg	Al
质量分数/%	5.17	42.22	1.31	0.64	6.74
元素	Si	K	Ca	Fe
质量分数/%	29.17	0.88	5.53	0.93

再生次数/次	5	10	15	20	25
氨氮/（mg·L^-1）	559.5	549.3	536.2	522.0	511.2

再生次数/次	5	10	15	20	25
氨氮/（mg·L^-1）	559.5	549.3	536.2	522.0	511.2

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